The performance of motion-resolved whole-heart MR imaging strongly depends on the quality of cardiac- and respiratory-gating signals. While navigators or self-navigation can be used to account for respiratory motion, ECG is a mainstay for synchronizing data acquisition with the cardiac cycle. We tested whether physiological motion information, directly extracted from k-space-center, can replace respiratory navigators and ECG signals. The proposed solution was applied in 9 healthy volunteers and results were compared to those obtained with the ECG-signal. Correlation between R-wave time-stamps from the ECG and the cardiac self-gating signal was excellent, while image quality and coronary artery conspicuity remained unchanged.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords